Sender.



J. A. KROPP.

SENDER. APPLICATION FILED JULY 29,1913.

Patented Dec. 29, 1914 2 SEEETSSHEI1T 1.

J. A. KROPP SENDER.

APPLICATION FILED JULY 29. 1913.

1,122,615; Patented Dec. 29,

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JOHN A. KROPP, OF NEWARK, NEW" JERSEY, ASSIGNOB TO VJESIERN ELECTRICCOM- PMY, OF NEW YORK, N. Y., A CORPORATION OF ILLINOIS.

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Application filed July 29, 1913. Serial No 781,784.

To all whom it may concern Be it known that I, Jot-11v A. Knorr, acitizen of the United States, residing at Newark, in the county of Essexand State of New Jersey, have invented a certain new and usefulImprovement in Senders, of which the following is a full, clear,concise, and exact description. I

This invention relates to calling devices or senders for use inautomatic or semiautomatic exchange systems, and has for its object theprovision of an improved and simplified" structure for transmittingsignaling current to the exchange mechanisms,

which cannot be readily deranged and which it is practically impossibleto operate in an incorrect manner.

Briefly stated, myinvention consists of a rotatable finger-piece and aplurality of stopping positions, and mechanism so arranged that if saidfinger-piece be moved to any desired position and then forcibly returnedto normal, it will cause impulses to be transmitted corresponding to theposition to which the finger-piece was moved.

Referring now to the drawings Figure 1 is a perspective view of thesending apparatus with parts broken away; Fig. 2 is in part a brokenperspective view, with parts broken away; Fig. 3 is a view or thedriving gear and the parts carried thereby; Fig. 4- is a transversesectional view on the line of Fig. 1; Figs. 5, (Sand 7 are sideelevations of the device with partsv broken away, showing thecontrolling device in different actuated positions.

Referring now to'the drawings, plates 1 and 2 are maintained in spacedrelation by means of the spacing posts 3. Arranged to fit about thecircumference of the member 1 in contact with the plate 52, is acylinder 4 forming the inclosure for the sides of the apparatus. Fixedto the plate 2 is a dial member provided with a plurality ofequi-distant depressions containing the numerals from 0 to 9. Thenumerals 0 and 9 are spaced apart. substantially the distance of twopositions. Rotatably mounted in the plate 2 and the dial member 5. is a"hub 6 to which is fixed the actuating finger member 7. Fixed to themember 6 within the casing is an arm 8 and a. ratchet wheel 9. Themember 6 has a depression in the inner end thereof which receives oneend of the shaft 55. the other end of which is rotatably Specificationof Letters Iatent.

Patented net. an, ion.

mounted in the plate 1. Loosely mounted on the shaft by means of thecollar 10, a cylinder 11, provided with a pawl 12 held in engagementwith theteeth of the ratchet wheel 9 by means of the spring 13. Securedto the inner surface of the drum 11 is one end of the coil spring 14,the'other end of which is secured to the sleeve 15 on the shaft 55.Fixed to the sleeve 15 is the driving gear 16 ,and the impulse wheel 17.Rotatably mounted between the end of the bracket member .18 and theplate 1 is a shaft 19, provided with a pinion 20 arranged to intermeshwith the gear Wheel 16 and a worm wheel 21.

Rotatably supported in operative relation to the worm wheel 21 is a worm22, provided at one end with a centrifugal governor which comprises the-cy1inder'23 within which are located the weighted ends of the springarms 24 fixed. to the end of the worm (See Figs. 1 and 4). gecure theopposite end of the Worm shaft is a pair of oppositely projecting lugs26. Uperatively associated with the impulse wheel 17 is a spring arm 29,insulatively secured to the contact spring by means of the spacingmember 31. Mounted for engagement with the contact spring 30 when theend of the arm 29 is locatedin a depression between the teethoftheimpulse wheel, is a second contact spring 232.- Springs 30 and arenormally in engagemennbut upon the rotation of the impulse wheel 17,contact therebetween will be alternately made. and interrupted. It willnow be seen that if the arm '7 be rotated in an anticlockwise directionto" any desired position, that the teeth of the ratchet wheel 9 willride under the pawl 12 without rotating the spring drum 11. Uponclockwise return, however, of the arm 7 to its normal position, midwaybetween positions 0 and 9, the spring drum will be rotated, thus.tensioning the spring 1 and tending to rotate the impulse wheel 17 tomake and break the contact be tween springs 30 and 32. Means. however.are provided to assure that no rotation of the contact wheel will take.place until the arms 7 assure that the rotation of said impulse wheelwill be positively stopped when the correct number of impulses have beentransmitted.

Mounted for longitudinal movement is is locked in its home position, andto 'thegro d 34, one end of which is received inv fixed to the rod 34 bymeans of a notched arm 8.

portion of said rod being received in the bifurcated end of said bar 37as shown in 1. This bar is centrally enlarged and perforated and passesloosely about the rotatable member 6. Punched from the bar 37 near oneend is a cam-like catch 38 adapted when the rod 34 is in its upper mostposition, as shown in Figs. 6 and 7, to be in-a position to engage andretain the Mounted parallel to the rod 34 in the plate 1 and bracketmember 35 is a longitudinally movable member 39 held in its normal orlowermost position as viewed in Fig. 5 by means of a spring 40, one endof which is secured to the plate 1, the other end being secured to saidbar 39 in any desired manner. A spring 41 is secured at one end to theplate 1 and at the other end to the rod 34 as shown in Fig. 1, Thisspring is provided intermediate its end with a projecting portion 42,(Fig. 5), arranged for engagement with the hub of the impulse wheel 17,wherebythe gear wheel 16. is nor mally forced toward engagement with thespring drum 11.

Formed in the circumference of the spring drum 11 adjacent the gear 16is a depression 43. Rotatably mounted in the wheel 1.6 and the plate 44secured thereto, in a position to traverse the circumference of the drum11, is a roller 45 which, when the parts are in normal position, islocated in the depression 4-3 so that the drum 11- and gear 16 are inengagement as shown in Figs. 4 and 5, but

upon-rotation of the finger-piece 7 from normal position, this rollerrides out of the depression 43, elevating the hub of the impulse wheel17 on the shaft 55, and through 41 forcing the rod 34 upwardly as shownin Figs. 6 and 7. Near the opposite edgeof the gear 16, but notdiametrically opposite the roller 45 just mentioned, is another roller46, and formed in the circumference of the drum 11 is a notch 47corresponding to the notch 43 just described. As these rollers and theircorresponding notches are not diametrically opposite, both rollers willenter the notches only when the wheel 16 and the drum 11 are.

in a certain relative position, that is, each roller must be positionedin its respective notch in the drum in order that the gear 16 mayapproach the drum 11.

Formed in the gear 16 near the circumference thereof, is a fplurality ofslots 56, one for each position 0' the finger-piece or actuating member7. Projecting from the bracket 35 is a finger 57 so arranged that whenthe gear 16 approaches the drum 11 as the arts of the sender approachnormal, the 'nger 57 will enter oneof the slots 56 and prevent furtherrotation of said gear wheel until after the drum has been again rotatedby means of the lever 7. Secured to the springs 40 and 41 respectively,near the ends thereof, are a pair of fingers 48 and 49 adapted tocoiiperate with the projecting arms 26 at one end of the worm 22. Thesesprings 40 and 41 are secured at their ends to rods 39 and 34 aspreviously described, and when either of said rods is in its lowerposition as viewed in Figs. 5, 6 and 7, the corresponding one of saidstop members 48 or 49 will be positioned in the path of rotamember 7 isrotated in one direction or the 7 other. The cam surface 51 ends inavertical surface or stop portion 52 (see Fig. 5) ,which acts as a stopfor the arm 8 after the rod 39 has been raised a certain distance. Thearm 8, however, can be rotated in the other direction or in ananti-clockwise direction as viewed in Fig. 1 Without limit as theratchet wheel 9 will ride under the pawl 12 and the arm 8 will force therod 39 downwardly out of the path of its movement by means of the camsurface 50.

.Projecting outwardly from the plate 44 is a lug 53, and projectingoutwardly from the circumference of the drum 11 vis a lug 54adapted forengagement with the lug 53 when the drum and gear are in their normalrelative positions, thus preventing reverse rotation of the drum whenthe parts are released after the series of impulses have beentransmitted.

Having now described the parts of the device and their relation one toanother, the operation is as follows: It should be understood that whenthe sender is in its normal position the stop lugs 48 and 49, fixed tothe rods 34 and 89 by means of the springs 41 and 40, are normallyretained in the path of rotation of the lugs 26 on the worm shaft 22. Toset up. a call the operator, whether at the substation or at the centraloilice, actuates the lever 7 by inserting her finger in the hole at theend thereof and rotating the lever in an anti-clockwise direction untilit occupies a position to allow the operating finger to enter thedepression indicated by the first digit of the call. This rotation musttake place in an anti-clockwise direcwith the rollers so and a6 and thegear 16 and members fixed thereto will be; moved longitudinally on theshaft 55 away from thedrum l1,'thus displacing the spring ll and causingthe rod 34.- to be moved upwardlyas viewed in Figs. 6 and 7. Thismovement of the rod 3i carries the stop finger 48 out of the path of thelugs 26. The stop member l9, however, remains in engagement with one ofthe arms 26 until upon the approach of lever 7 to its normal positionthe arm 8 engages the cam surface 51 and depresses the rod 39. As thearm 8 approaches the cam surface 51, it engages and asses under the camprojection 38 carried )y the spring arm 37 now in its raised position asshown in Fig. 7. As the arm 8 engages the stop member 52, it passes backof the catch 38 and is maintained stationary until the sending ofthe'series of impulses has been completed, when. as the rollers l5 againenter the cam notches 43, the rod 34 is. again shifted longitudinally toremove tie catch. 38 out of the path of the arm 8.

When the rod 39 is depressed by the arm 8 engaging the cam surrace 51,both stops 18 and 4-9 are out of engagement with the lugs 26 and theworm wheel is caused to rotate by the power transmitted from the spring14, through gear 16, pinion and worm wheel 21 to the worm 22. The gover-"nor carried at theopposite end of the worm 22 serves to regulate thespeed of rota tion thereof and consequently determines; the

rapidity with which the impulseh shall be transmitted. The .impulsewheell7 fixed to the gear 16 rotates therewith, intermittently opening andclosing the contact between the springs 30 and 32. As the last impulseof the series is being sent, the rollers 45 and 46 enter the cam notches43 and d7, allowing the gear 16 to again approach the drum 11, releasingthe spring ll which thereupon causes the rod Site be shifted downwardly,as viewed in Figs. 5 to 7 and j -placing the stop finger $8 in the pathof the lugs 26 carried by the Worm 22, thus bringing the sendingoperation to a close. The longitudinal, displacement of the rod 34 hasreleased the'arm 8 and the device is now in condition for anothersending operation. This operation of rotating the operating lever 7 to aposition over the desired digit and then returning the lever to itsnormal position is repeated once for each digit of the wantedsubscribers number.

I claim:

l. In a sender, circuit interrupting mechanism, an operating membertherefor, means whereby the initial movement ofsaid memher from itsnormal position will be ineffective, means whereby the return of saidmember to said position will ca se the actuation oi said circuitinterrupter, and means whereby a partial return will be ineffective.

3. In a sender, circuit interrupting mech- :mlsm, motor mechanismtherefor. an operating member i or teusioning' said motor means, meanswhereby the movement of said member in one direction will beineffective, and means whereby the return of said member to a definiteposition will tension said motor means to cause the actuation of saidcircuit interrupter.

3. In a sender, circuit interrupting mechanism, motor means foroperating said "mechanism, a member for tensioning said motor means,means whereby the movement of said member in one direction will beineffective, means whereby the return move ment of said member willtension said motor means, and means for releasing said motor mechanismwhen said member has reached a definite position.

i. In a sender, circuit interrupting mechanism, motor means foroperating said mechanism, a pivoted member for tensioning said motormeans, means whereby the movement of said member in one direction willbe ineffective, means for tcnsioning said motor ,means by the return ofsaid member, means for releasing said motor on the return of said membertol-adefinite position whereby said circuit interrupting mechanism willbe actuated, and means for retaining said memher in said position duringthe actuation of said circuit interrupter.

fnln a sender, circuit interrupting mech anism, an operating membertherefor,

mounted for unlimited rotation in one direc-,'

tion, and means whereby the moving of. said' 'memfber in the reversedirection to a definite position will effect the actuation of saidcircuit interrupter. v 6. In a sender, circuit interrupting mechanism, aspring motor for operating said. mechanism, a pivoted lever fortensioning said motor, means whereby the unlimited movement of saidmember in one direction will be ineffectivegmeans whereby the reversemovement otf said member will tension said motor, and means actuateduponthe return of said member to a definite position for releasing saidmotor, 'whereby'said circuit interrupting mechanism will be actuated.

7. In a sender, circuit interrupting mechanism, motor means foractuating said mechanism, a member for tensioning said motor means,means whereby the selective movement of said member will beinefi'ective, means whereby the movement of said mem her in a reversedirection will tension said motor means, means for releasing said motorupon the return of said member to a definite position and means forgoverning said reverse movement, and means for rethe speed of saidmotor. v lensing said motor when said lever has been 8. In a sender,circuit interrupting mechreturned into :1 definite position. anism,motor means for actuating said mech- In witness whereof, I hereuntosubscribe 5 nnisin, an operating lever, means whereby my name this 26thday of July A. 11,1913. 15

the seieetire novenrent of said lever in. one JOHN A. KROPR direction111 be meheetne, means whereby v the movement of said lever in thereverse di- Witnesses:

rection will tension said motor means, means ALICE HAZLEY,

10 for retaining said motor inactive during LAURA Donnie.

